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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG526273935

Shape and cutting style on the report: Round brilliant

Certificate IGI LG526273935

Diamond specifications and retailer prices

From $198 USD
As of November 5, 2026
Save $1,222 USD (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,420 USD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG526273935 or 526273935. Listed at 14 retailers as of November 5, 2026, with prices from $198 to $1,420, a $1,222 spread on the same certified stone. Brilliant Earth lists it at $1,420. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526273935
Dimensions7.37 × 7.35 × 4.52 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.37 mm7.35 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526273935
Side View
Table 59.0%Crown 35.3°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,420 USD|Low: $198 USD|High: $1,420 USD|Avg: $549 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$198 USD
Retailer 11$222 USD
Retailer 9$245 USD
Retailer 10$330 USD
Retailer 2$443 USD
Retailer 5$449 USD
Retailer 3$502 USD
Retailer 4$730 USD
Retailer 7$791 USD
Retailer 6$1,146 USD
Brilliant Earth$1,420 USD

44 data points across 11 retailers

14 retailers$198 USD to $1,420 USD

A
Cheapest Retailer
-
$198 USD
A
Retailer 2
-
$222 USD
View
Final sale: no returns
A
Retailer 3
-
$230 USD
View
A
Retailer 4
-
$245 USD
View
Retailer 5
-
$245 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$330 USD
View
A
Retailer 7
-
$443 USD
View
A
Retailer 8
-
$449 USD
View
A
Retailer 9
-
$502 USD
View
B
Retailer 10
-
$730 USD
View
B+
Retailer 11
-
$789 USD
View
B+
Retailer 12
-
$791 USD
View
B
Retailer 13
-
$1,146 USD
View
Most Expensive
B
Brilliant Earth
16211586A · Nov 5
$1,420 USD
View
13 more retailers have this diamond
Prices start from $198 USDSave up to $1,222 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Round
$198 USD